ohamberlin



we Model.) 2 Sheets-Sheet 1. I

G. CHAMBERLIN.

PUMP.

NO. 475,296. Patented May 24, 1892.

(No Model.) 2 Shets-Sheet 2.

C. GHAMBERLIN.

PUMP

No. 475,296. Patented May 24, 1892.

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UNITED STATES PATENT FFICEQ CHARLES OHAMBERLIN, OF KANSAS CITY, ASSIGNOROF ONE-HALF TO WVALTON J. CONKLE, OF JACKSON, MISSOURI.

PUMP.

SPECIFICATION forming part of Letters Patent No. 475,296, dated May 24,1892.

Application filed December 30, 1891. Serial No. 416,602. (No model.)

To all whom it may concern:

Be it known that 1, CHARLES CHAMBERLIN, a citizen of the United States,residing at Kansas City, in the county of Jackson and State of Missouri,have invented certain new and useful Improvements in Pumps; and I dohereby declare that the followingis aful], clear, and exact descriptionthereof, such as will enable others to make and use the same, referencebeing had to the accompanying drawings, forming a part of thisspecification.

The object of my invention is to exclude the admission of rarefied airwithin the cylinder of a suction and force pump, and thus enable thecompression of the plunger to be brought instantaneously upon the fluidand the consequent discharge of the fluid with increased power andregularity; and it consists in the novel construction and combination ofparts, which will first be fully described, and specifically pointed outin the claims.

In the drawings, Figure 1 is a longitudinal sectional View of thepump-cylinder, showing the double acting plungers and the intermediatesliding diaphragm in position at the end of a full stroke of the plungerin the direction of one end of the pump-cylinder and in dotted lines theposition of the respective parts at the end of the return stroke and theother end of the cylinder. Fig.- 2 is a vertical sectional View of thepump, taken upon the line a: x of Fig. 1. Fig. 3 is a detail perspectiveview of the sliding diaphragm,showingthe port-closing flanges, thepistonson both sides of the diaphragm, and the piston-rod. Fig. 4 is analternate view showing the sliding diaphragm applied to the cylinderorbody of a single-acting pump. Fig. 5 is a perspective View in detailshowing the diaphragm for the single-acting pump.

Similar'letters of reference indicate corresponding parts in all thefigures.

In carrying out my invention,Arepresents a longitudinal hollow case,preferably cylindrical in form and open at both ends. Through the sideof the case A, at a point equidistant from both ends, is made adischarge opening or port a. To the outer side portion of the case A andextending around the port a is rigidly attached one end of thedischargepipe B. Upon the other side of the case, in the same horizontalplane with that of the port a, and through said case are made theinduction openings or ports a a and in which pipe is a foot-valve c. Theport a is placed in position a short distance toward one end of the caseA from the point equidistant from both ends of said case, and the port ais placed toward the other end of said case the same distance, therebyplacing the ports a considerable distance apart. To the outer sideportion of the case is rigidly attached one end of the induction-pipe O,which extends around and incloses both ports a (1 Within the cylinder Aand near one end is placed the piston D. In the other end of thecylinder is placed a piston E. To the piston D is attached one end of apiston-rod F, which passes longitudinally through the interior of thecase A and also through the piston E, both pistons being secured rigidlyto the said rod, the position of the pistonE being near the port a whenthe piston D is at the outer end of the case A.

Within the case A, between the pistons D E and sliding loosely on therod F, is a circular plate or diaphragm G. To one side of the diaphragmor. plate G is cast or formed an extended plate or cut-off g, whichextends over the induction-opening a and is comparatively narrow inwidth. The outer surface g of the plate 9 is on the same plane anddescribes the same curvature as that of the periphery of the diaphragmG. Upon the same side of the diaphragm G and from the peripheral portionof the diaphragm in the same horizontal plane with the plate g is castor formed a similar plate or cut-off g, which extends over thedischarge-opening ain the case A. Upon the other side of the diaphragmand extending in the same line and in opposite directions to the platesg g are the plates g g which are formed precisely as the plates g g, theplate g extending over the port a and the plate or cutofl g closing withthe cut-off g the discharge-opening a alternately. Through the plate g,close in position to the side of the diaphragm G, is made a transverseopening corresponding in size to the opening at in the case A. Throughthe plate 9, directly opposite the opening g on plate 9, is made anopening g which passes through the respective plates 9 and 9 Upon theother side of the diaphram G are made the openings g 9 which are closein position to the said diaphragm and correspond to the openings g g indimensions. Beneath the lower edge of each one of the respective plates9 g g g and attached to inner side of the case A are the short rails orseats a", which extend along the sides of said case toward the diaphragmG only so far as is necessary to keep the plates in exact position forclosing the openings in the case A without interfering with the movementof the diaphragm. In the path of the diaphragm Gand in the inner side ofthe case A are secured two pins or stops a, a. One of said pins a isplaced in position in line transversely with the case A with the inneredge of the eduction-opening, which is toward the induction-opening aThe other pin is placed upon the other side of the diaphragm and in aline with the inner edge of the inductionopening a which is toward theinductionopening a.

In Fig. 4 I have shown a pump-cylinder A provided with but one dischargeand one induction opening and a single piston H.

a represents the induction opening, in which is inserted one end of aninductionpipe 0, in which pipe is a foot-valve c. B represents theinduction or discharge pipe, which is connected with thedischarge-opening in the cylinder A which opening is arranged a shortdistance from and at one side of a line drawn transversely through thecylinder A and through the eduction-opening a. In the eduction-pipe B isplaced an ordinary check-valvev. The diaphragmisconstructed precisely asshown in Fig. 1, with the exception of the openings g 9 which arerendered unnecessary. In the operation of the piston-rod F, as seen inthe position of the pistonsE D in Fig. 1, in which the piston D is atthe extreme end of the cylinder, the port a and the opening 1 hollowcylinder having open ends and a piston in each end, an automatic slidingcut-0E g in the plate g are in a position to register, and thus fill thecompartment of the cylinder between the piston D and the diaphragm withliquid. In the forward movement of the pistons D E the action of thepiston D is upon the liquid, while the piston E is endeavoring to createa vacuum by suction through the port a. In this movement of the piston Ethe diaphragm moves or slides automatically in the direction of themovement made by the pistons D E, thus closing the eductionopening a andopening the induction-opening a and permitting the fluid to bedischarged through the discharge-opening a, and at the same time closingthe discharge from the suction-chamber between the piston E and thediaphragm G. There is no vacuum in either chamber formed by the pistonsE and D, as between said pistons and the diaphragm both chambers arefilled with water alternately, and as a result of the action of thepistons the diaphragm G moves simultaneously with the movement of thepistons D and E and in the same direction and the cutoif is eflected.The diaphragm G moves toward the stop a, and upon reaching said stop achamber is formed for induction, which is filled with water in themovement of piston E as it departs or moves in the direction indicated,the outlet or eduction opening being closed and the induction open, andvice versa.

In the reverse movement of the piston the same result follows, and thedischarge-openings being constantly passing the dischargeopening a acontinuous stream with great lifting power is attained. The action ofthe piston in either single or double piston pumps is the same. Thesuction causes the diaphragm to follow the piston, which movement of thediaphragm is limited by the stops a a. An ordinary foot-valve in theinduction-pipe prevents a return of the Water to the well or othersource of supply.

Having fully described my invention, what I now claim as new, and desireto secure by Letters Patent, is-

1. A pump consisting of a hollow cylinder having open ends, a piston andan automatically-sliding cut-0E within said cylinder, said cylinderhaving a chamber between said outoff andpiston, induction and eductionpipes connected with said chamber and opened and 1 closed alternately bymeans of said automatic cutoff, and a check-valve in said pipes,substantially as and for the purpose described.

2. In a double-acting pump consisting of a between said pistons, saidcylinder having chambers between said cut-off and said pis tons, aninduction-pipe connected with each chamber, and a discharge-pipeconnected with both chambers and opened and closed alternately by meansof said automatic sliding cut-off, and means for checking the backflowof the liquid in said induction-pipe, substantially as described.

CHARLES CHAMBERLIN. Witnesses:

S. L. C. HASSON, WM. GILLHAM.

